h8300.md (udivmodqi4): Split the pattern into an expander and an anonymous pattern.

	* config/h8300/h8300.md (udivmodqi4): Split the pattern into
	an expander and an anonymous pattern.  Zero out the upper half
	of the dividend in the expander.
	(udivmodqi4): Likewise.

From-SVN: r56923

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 74f035a63b384e785308af6fce0e9f1b8caad868..a5d97bf47024decfdeb7595761c33f591924dbc5 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2002-09-07  Kazu Hirata  <kazu@cs.umass.edu>
+
+       * config/h8300/h8300.md (udivmodqi4): Split the pattern into
+       an expander and an anonymous pattern.  Zero out the upper half
+       of the dividend in the expander.
+       (udivmodqi4): Likewise.
+
 2002-09-07  Kazu Hirata  <kazu@cs.umass.edu>
 
        * config/h8300/h8300.c: Fix formatting.

diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index 822367dc7905dadc3dff88db74562229f2ecfb41..50d3e4f4249409b6c3deae59464b99b55f655783 100644 (file)
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -911,7 +911,25 @@
 ;; DIVIDE/MOD INSTRUCTIONS
 ;; ----------------------------------------------------------------------
 
-(define_insn "udivmodqi4"
+(define_expand "udivmodqi4"
+  [(set (match_operand:HI 1 "register_operand" "")
+       (and:HI (match_dup 1)
+               (const_int 255)))
+   (parallel [(set (match_operand:QI 0 "register_operand" "")
+                  (truncate:QI
+                    (udiv:HI
+                      (match_dup 1)
+                      (zero_extend:HI
+                        (match_operand:QI 2 "register_operand" "")))))
+             (set (match_operand:QI 3 "register_operand" "")
+                  (truncate:QI
+                    (umod:HI
+                      (match_dup 1)
+                      (zero_extend:HI (match_dup 2)))))])]
+  "TARGET_H8300H || TARGET_H8300S"
+  "")
+
+(define_insn ""
   [(set (match_operand:QI 0 "register_operand" "=r")
        (truncate:QI
          (udiv:HI
@@ -955,7 +973,25 @@
   [(set_attr "length" "6")
    (set_attr "cc" "clobber")])
 
-(define_insn "udivmodhi4"
+(define_expand "udivmodhi4"
+  [(set (match_operand:SI 1 "register_operand" "")
+       (and:SI (match_dup 1)
+               (const_int 65535)))
+   (parallel [(set (match_operand:HI 0 "register_operand" "")
+                  (truncate:HI
+                    (udiv:SI
+                      (match_dup 1)
+                      (zero_extend:SI
+                        (match_operand:HI 2 "register_operand" "")))))
+             (set (match_operand:HI 3 "register_operand" "")
+                  (truncate:HI
+                    (umod:SI
+                      (match_dup 1)
+                      (zero_extend:SI (match_dup 2)))))])]
+  "TARGET_H8300H || TARGET_H8300S"
+  "")
+
+(define_insn ""
   [(set (match_operand:HI 0 "register_operand" "=r")
        (truncate:HI
          (udiv:SI